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Synthesis of covalent organic framework materials and their application in the field of sensing

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Nano Research 2024年第1期17卷 162-195页

作者： weiyu zhang Shiwei Liu Qihua Sun Ning Tian Zhaofeng Wu Xinjiang Key Laboratory of Solid-State Physics and Devices Urumqi 830046China School of Physics Science and Technology Xinjiang UniversityUrumqi 830046China

Covalent organic frameworks(COFs)are an emerging type of porous crystalline polymers formed by combining strong covalent bonds with organic building *** to their large surface area,high intrinsic pore space,good crystallization properties,high stability,and designability of the resultant units,COFs are widely studied and used in the fields of gas adsorption,drug transport,energy storage,photoelectric catalysis,electrochemistry,and *** recent years,the rapid development of the Internet of Things and people’s yearning for a better life have put forward higher and more requirements for sensors,which are the core components of the Internet of ***,this paper reviews the recent progress of COFs in synthesis methods and sensing applications,especially in the last five *** paper first introduces structure,properties,and synthesis methods of COFs and discusses advantages and disadvantages of different synthesis ***,the research progress of COFs in different sensing fields,such as metal ion sensors,gas sensors,biomedical sensors,humidity sensors,and pH sensors,is introduced *** and prospects are also presented in order to provide a reference for researchers concerned with COFs and sensors.

关键词： covalent organic framework materials structural design and synthesis sensing application gas sensors

An in-situ NH_(4)^(+)-etched strategy for anchoring atomic Mo site on ZnIn_(2)S_(4) hierarchical nanotubes for superior hydrogen photocatalysis

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Science China Chemistry 2021年第10期64卷 1716-1722页

作者： Yuguang Chao weiyu zhang Peng Zhou Hui Chen Shiyu Lu Menggang Li Qinghua zhang Lin Gu Shaojun Guo School of Materials Science and Engineering Peking UniversityBeijing 100871China Institute of Physics Chinese Academy of SciencesBeijing 100190China Beijing Innovation Center for Engineering Science and Advanced Technology(BIC-ESAT) College of EngineeringPeking UniversityBeijing 100871China

Atomic sites co-catalyst (ASC) on photocatalytic materials possesses an attractive prospect to promote charge carrier separation and tune surface reaction kinetics,yet the synthesis of earth-abundant ASC under low temperature remains a great ***,a novel in-situ NH_(4)^(+)-etched strategy to anchor atomic Mo sites on ZnIn_(2)S_(4)hierarchical nanotubes (HNTs) with abundant mesopores under mild conditions for promoting charge carrier separation and enhancing light multi-reflections is developed for efficient photocatalytic H_(2) *** functional theory calculations and linear sweep voltammetry demonstrate that the well-defined Mo-S_(2)O_(1) sites with distinctive coordination configuration and electronic property contribute to the enhanced separation of photo-generated charge carriers and reduced Gibbs free energy for H_(2) ***,the well-defined MoSA-ZIS HNTs present an excellent photocatalytic activity with a rate of 29.9μmol h^(-1)(5.98 mmol g^(-1)h^(-1)),which is 7.3 times higher than that of ZnIn_(2)S_(4)nanosheets (NSs),to be among the best ZnIn_(2)S_(4)-based *** present strategy breaks the high-temperature limitation of conventional top-down thermal dissociation/emitting approach for anchoring non-noble metal atomic sites on catalyst support.

关键词： in-situ NH_(4)^(+)-etched hierarchical nanotubes Mo single atoms photocatalytic H_(2)evolution

Increasing prevalence of antibiotic resistance genes in manured agricultural soils in northern China

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Frontiers of Environmental Science & Engineering 2020年第1期14卷 43-54页

作者： Nan Wu weiyu zhang Shiyu Xie Ming Zeng Haixue Liu Jinghui Yang Xinyuan Liu Fan Yang College of Engineering and Technology Tianjin Agricultural UniversityTianjin 300384China College of Marine and Environmental Sciences Tianjin University of Science&TechnologyTianjin 300457China Laboratory of Agricultural Analysis Tianjin Agricultural UniversityTianjin 300384China College of Horticulture and Landscape Tianjin Agricultural UniversityTianjin 300384China

Land application of manure tends to result in the dissemination of antibiotic resistance in the *** this study,the influence of long-term manure application on the enrichment of antibiotic resistance genes(ARGs)and mobile genetic elements(MGEs)in agricultural soils was *** the analyzed eight ARGs(tetA,tetW,tetX,sull,sulll,ermF,aac(6')-Ib-cr and blaTEM)and two MGEs(intJJ and Tn916/1545)were detected in both the manured and control soils,with relative abundances ranging from 10^-6 to 10^-2 Compared with the control soil,the relative abundances of ARGs and MGEs in manured soils were enriched 1.0-18.1 fold and 0.6-69.1 fold,***-throughput sequencing analysis suggested that at the phylum level,the bacteria carrying intll and ermF might be mainly affiliated with Proteobacteria and Bacteroides,*** dominant genera carrying intll and ermF cow\d be Pseudomonas and Bacteroides,independent of manure *** analysis revealed that ARGs had strong links with soil physicochemical properties(TC,TN,and OM),heavy metals(Cu,Zn and Pb)and MGEs,indicating that the profile and spread of ARGs might be driven by the combined impacts of multiple *** contrast,soil pH and C/N exhibited no significant relationships with *** findings provide evidence that long-term manure application could enhance the prevalence and stimulate the propagation of antibiotic resistance in agricultural soils.

关键词： Antibiotic resistance Mobile genetic elements Soil Manure Heavy metals

Clinical efficacy of comprehensive therapy based on traditional Chinese medicine patterns on patients with pneumoconiosis: a pilot double-blind, randomized, and placebo-controlled study

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Frontiers of Medicine 2022年第5期16卷 736-744页

作者： Jiansheng Li Hulei Zhao Yang Xie Jieya Li Qingwei Li Xuexin Chen weiyu zhang Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-constructed by Henan Province&Education Ministry of China Henan University of Chinese MedicineZhengzhou 450046China Henan Key Laboratory of Chinese Medicine for Respiratory Disease Henan University of Chinese MedicineZhengzhou 450046China Department of Respiratory Diseases The First Affiliated Hospital of Henan University of Chinese MedicineZhengzhou 450000China Department of Pneumoconiosis Henan Hospital for Occupational DiseasesZhengzhou 450052China Department of Respiratory Diseases Jiaozuo Coal Industry Group Co.Ltd.Central HospitalJiaozuo 454000China Department of Pneumoconiosis Yima Coal Industry Group Co.Ltd.General HospitalYima 472300China

Effective therapy options for pneumoconiosis are *** Chinese medicine(TCM)presents a favorable prospect in the treatment of pneumoconiosis.A pilot study on TCM syndrome differentiation can evaluate the clinical efficacy and safety of TCM and lay a foundation for further clinical research.A double-blind,randomized,and placebo-controlled trial was conducted for 24 weeks,in which 96 patients with pneumoconiosis were randomly divided into the control and treatment *** treatment was conducted for the two *** treatment group was treated with TCM syndrome differentiation,and the control group was treated with *** primary outcomes were the six-minute walking distance(6MWD)and the *** Respiratory Questionnaire(SGRQ)*** secondary outcomes were the modified British Medical Research Council Dyspnea Scale(mMRC),Chronic Obstructive Pulmonary Disease Assessment Test(CAT),Hospital Anxiety and Depression Scale(HADS),and pulmonary *** 83 patients from the 96 patients with pneumoconiosis finished the *** the primary outcome,compared with the control groups,the treatment group showed a significantly increased 6MWD(407.90 m vs.499.51 m;95%confidence interval(CI)47.25 to 135.97;P<0.001)and improved SGRQ total score(44.48 vs.25.67;95%CI 27.87 to 9.74;P<0.001).The treatment group also significantly improved compared with the control group on mMRC score(1.4 vs.0.74;95%CI 1.08 to 0.23;P=0.003),CAT score(18.40 vs.14.65;95%CI 7.07 to 0.43;P=0.027),and the total symptom score(7.90 vs.5.14;95%CI 4.40 to 1.12;P<0.001).No serious adverse events *** study showed that TCM syndrome differentiation and treatment had a favorable impact on the exercise endurance and quality of life of patients with pneumoconiosis.

关键词： pneumoconiosis randomized controlled trials traditional Chinese medicine

A highly efficient atomically thin curved Pd Ir bimetallene electrocatalyst

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National Science Review 2021年第9期8卷 100-110页

作者： Fan Lv Bolong Huang Jianrui Feng weiyu zhang Kai Wang Na Li Jinhui Zhou Peng Zhou Wenxiu Yang Yaping Du Dong Su Shaojun Guo School of Materials Science and Engineering Peking University Department of Applied Biology and Chemical Technology Hong Kong Polytechnic University Frontier Institute of Science and Technology jointly with College of Science Xi'an Jiaotong University Center for Functional Nanomaterials Brookhaven National Laboratory School of Materials Science and Engineering & National Institute for Advanced Materials Nankai University College of Engineering Peking University

The multi-metallene with an ultrahigh surface area has great potential in precise tuning of surface heterogeneous d-electronic correlation by surface strain effect for the distinctive surface electronic structure, which is a brand new class of promising 2 D electrocatalyst for sustainable energy device application. However, achieving such an atomically thin multi-metallene still presents a great ***, we present a new synthetic method for an atomic-level palladium-iridium(Pd Ir) bimetallene with an average thickness of only～1.0 nm for achieving superior catalysis in the hydrogen evolution reaction(HER) and the formic acid oxidation reaction(FAOR). The curved Pd Ir bimetallene presents a top-ranked high electrochemical active area of 127.5 ± 10.8 m~2 g Pd+Ir-1in the reported noble alloy materials, and exhibits a very low overpotential, ultrahigh activity and improved stability for HER and FAOR. DFT calculation reveals that the Pd Ir bimetallene herein has a unique lattice tangential strain, which can induce surface distortion while concurrently creating a variety of concave-convex featured micro-active regions formed by variously coordinated Pd sites agglomeration. Such a strong strain effect correlates the abnormal on-site active 4 d10-t2g-orbital Coulomb correlation potential and directly elevates orbital-electronegativity exposure within these active regions, resulting in a preeminent barrier-free energetic path for significant enhancement of FAOR and HER catalytic performance.

关键词： strain metallene PdIr alloy atomically thin electrocatalyst

合金元素V及控轧控冷工艺对大跨度建筑用抗震钢板组织与性能的影响

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金属热处理 2014年第6期39卷 123-125页

作者：张唯煜德州职业技术学院建筑园林工程系山东德州253000

屈强比是建筑用抗震钢板的重要性能指标。本文以低碳钢板为对象,研究了微合金化元素V、控轧控冷工艺参数对其力学性能与微观组织的影响。结果表明,随终轧温度升高,试验钢的抗拉强度与屈服强度都得到提高,且添加了V的试样的屈强比稍高于... 详细信息

屈强比是建筑用抗震钢板的重要性能指标。本文以低碳钢板为对象,研究了微合金化元素V、控轧控冷工艺参数对其力学性能与微观组织的影响。结果表明,随终轧温度升高,试验钢的抗拉强度与屈服强度都得到提高,且添加了V的试样的屈强比稍高于未添加V的试样。随终冷温度升高,钢板的屈强比降低,当终冷温度为560℃时,钢板可以获得较高强度与良好屈强比性能。添加V试样的晶粒细化明显,且随终冷温度升高,组织中M-A更加细小,分布更为均匀。

关键词： V 控轧控冷钢板组织力学性能

Polo-like kinase 1 as a biomarker predicts the prognosis and immunotherapy of breast invasive carcinoma patients

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Oncology Research 2024年第2期32卷 339-351页

作者： JUAN SHEN weiyu zhang QINQIN JIN FUYU GONG HEPING zhang HONGLIANG XU JIEJIE LI HUI YAO XIYA JIANG YINTING YANG LIN HONG JIE MEI YANG SONG SHUGUANG ZHOU School of Big Data and Artificial Intelligence Anhui Xinhua UniversityHefei230088China Department of Gynecology and Obstetrics Maternity and Child Healthcare Hospital Affiliated to Anhui Medical UniversityAnhui Province Maternity and Child Healthcare HospitalHefei230001China Department of Gynecology and Obstetrics The Fifth Clinical College of Anhui Medical UniversityHefei230032China Departments of Breast Surgery Fuyang Women and Children’s HospitalFuyang236000China Departments of Pathology Anhui Province Maternity and Child Health HospitalHefei230001China Department of Pain The First Affiliated Hospital of Anhui Medical UniversityHefei230032China Department of Gynecology and Obstetrics Linquan Maternity and Child Healthcare HospitalFuyang236400China

Invasive breast carcinoma(BRCA)is associated with poor prognosis and high risk of ***,it is critical to identify novel biomarkers for the prognostic assessment of ***:The expression data of polo-like kinase 1(PLK1)in BRCA and the corresponding clinical information were extracted from TCGA and GEO ***1 expression was validated in diverse breast cancer cell lines by quantitative real-time polymerase chain reaction(qRT-PCR)and western *** sample gene set enrichment analysis(ssGSEA)was performed to evaluate immune infiltration in the BRCA microenvironment,and the random forest(RF)and support vector machine(SVM)algorithms were used to screen for the hub infiltrating cells and calculate the immunophenoscore(IPS).The RF algorithm and COX regression model were applied to calculate survival risk scores based on the PLK1 expression and immune cell ***,a prognostic nomogram was constructed with the risk score and pathological stage,and its clinical potential was evaluated by plotting calibration charts and DCA *** application of the nomogram was further validated in an immunotherapy ***:PLK1 expression was significantly higher in the tumor samples in TCGA-BRCA ***,PLK1 expression level,age and stage were identified as independent prognostic factors of *** the IPS was unaffected by PLK1 expression,the TMB and MATH scores were higher in the PLK1-high group,and the TIDE scores were higher for the PLK1-low *** also identified 6 immune cell types with high infiltration,along with 11 immune cell types with low infiltration in the PLK1-high tumors.A risk score was devised using PLK1 expression and hub immune cells,which predicted the prognosis of BRCA *** addition,a nomogram was constructed based on the risk score and pathological staging,and showed good predictive ***:PLK1 expression and immune cell infiltration can predict post-immunotherapy pr

关键词： Breast invasive carcinoma(BRCA) Polo-like kinase 1(PLK 1) Random forest(RF) Support vector machine(SVM) Immune infiltration

Amorphous Ru nanoclusters onto Co‐doped 1D carbon nanocagesenables efficient hydrogen evolution catalysis

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Chinese Journal of Catalysis 2022年第1期43卷 110-116页

作者： Wenxiu Yang weiyu zhang Rui Liu Fan Lv Yuguang Chao Zichen Wang Shaojun Guo School of Materials Science & Engineering Peking University Beijing 100871 China Advanced Research Institute of Multidisciplinary Science Advanced Technology Research Institute (Jinan) Key Laboratory of Cluster Science School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China

析氢反应是电解水产制氢的关键反应之一.在碱性条件下,由于催化剂表面与反应过程中产生的氧物种、氢物种与催化剂的吸附未处于最佳状态,析氢反应动力学往往比较缓慢,比在酸性条件下慢2–3个数量级.目前,铂基纳米催化剂被认为是最优的析... 详细信息

析氢反应是电解水产制氢的关键反应之一.在碱性条件下,由于催化剂表面与反应过程中产生的氧物种、氢物种与催化剂的吸附未处于最佳状态,析氢反应动力学往往比较缓慢,比在酸性条件下慢2–3个数量级.目前,铂基纳米催化剂被认为是最优的析氢催化剂,但因价格昂贵、稳定性较差,限制了其在电解水器件上的大规模应用.因此,设计一种价格较为低廉、活性高和稳定性好的碱性析氢催化剂尤为必要.钌作为铂族金属之一,其价格约为铂的三分之一,但其与氢的结合能却与铂类似.因此,钌基催化剂被认为是有望替代铂作为析氢催化剂.本文结合模板法、静电纺丝和碳化热解策略构筑了一种负载无定型钌纳米簇的原子级钴掺杂一维碳纳米笼催化剂,有效提升了碱性条件下析氢反应性能.该催化剂具有较高的比表面积,丰富的缺陷结构,原子级分散的金属Co掺杂以及无定型钌纳米簇结构,并在碱性条件下催化析氢反应时,表现出了低起始过电位,低Tafel斜率(62 mV dec–1)和高稳定性.X射线衍射(XRD)结果表明,该催化剂中钌和钴以无定型形式存在.选区电子衍射结果表明了无定型结构的存在,并且钌以纳米簇形式存在,其平均粒径为1.48 nm.X射线光电子能谱结果表明该催化剂含有较高的氮掺杂,拉曼光谱证明了其存在碳缺陷结构.进一步通过X射线近边吸收谱和扩展边精细结构谱研究了钌和钴的配位环境,结果发现,钌带轻微正电荷,并且存在Ru–Ru键;钴带正电荷,价态介于0与+2价之间,其主要与N配位.在1 mol/L氢氧化钾电解液中,该杂化催化剂的电催化活性明显高于没有钴掺杂的催化剂以及商业化铂/碳催化剂.在电流密度为10 mAcm–2时,过电位仅为40 mV,在过电位为100 mV时,该催化剂的质量催化活性达到了3.77 mAμgRu–1,远超商业化铂/碳(2.01 mAμgRu–1)和钌/碳(1.66 mAμgRu–1).该催化剂也表现出了优异的析氢催化稳定性, 5000圈循环后, 10 mAcm–2下的过电位仅增加了2 mV,在恒电流测试中, 10 h后电位仅下降了95 mV.

关键词：无定型钌纳米簇单原子富缺陷碳析氢反应电催化

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Repair of a small and crooked vesicovaginal fistula using electrocauterization

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Asian Journal of Urology 2018年第3期5卷 182-183页

作者： weiyu zhang Kexin Xu Xiaopeng zhang Hao Hu Qi Wang Department of Urology Peking University People’s HospitalBeijingChina

Dear Editor,Vesicovaginal fistula(VVF)is an abnormal opening between the urinary bladder and the *** condition has an immense psychological effect on patients due to the continuous leakage of urine or watery vaginal *** wet feeling and foul smell associated with leakage of urine cause social outcasting of the *** leads to immense emotional trauma and makes life miserable for the *** most common etiology for VVF in developing countries is obstructed labour[1],and in developed countries,it is abdominal hysterectomy[2].VVF poses a challenging problem to the *** location and the size of the fistula determine the extent of the patients’symptoms.

关键词： fistula vaginal urine